56
Fcc LWP
56=56
2017-12-13T19:22:23.765551Z
This is a demo to understand pre-flight PUT; PUT data is captured by upload2.cgi as named FILE1(see source code)
(((xively uses a persistent login is the error, xively please set a cookie)))

click Submit without any file choosen to check pre-flight...
WILL NOT ask for credentials; login geraldkrug : password heaven (because not a ? after 0.xml)
Below http://boughtupcom.scriptmania.com/cgi/remindme/xs.php for working flight plan using cURL